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Robinia pseudoacacia/Black Locust

Robinia pseudoacacia / Robinia pseudoacacia
Clusters of spring flowers hanging on a mostly deciduous tree
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Clusters of spring flowers hanging on a mostly deciduous tree

Close-up of flower cluster and emerging foliage

Summer foliage

Early spring flowers

Flowers and fresh spring foliage occur at the same time

Partial canopy in full flower

Flowering tree on edge of other vegetation a common occurrence

Compound foliage

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Scientific Name: Robinia pseudoacacia
Common Name: Black Locust
Plant Type: Deciduous
Leaf Type: Broadleaf
Hardiness Zone: 5, 6, 7, 8, 9 Determine Your Zone
Height: 20-30 feet
Spread: 15 - 20 feet
Bloom time: Spring
Flower color: White
Fruit present: Summer, Fall
Fruit color: Brown
Light Exposure: Sun, Part Sun
Drainage: Well drained, Moist,
Rate of Growth: Moderate
Water Requirement: Medium
Maintenance Level: Low
Susceptible to insects
and diseases:
Landscape Categories: Plants That Attract Butterflies
Plants That Attract Hummingbirds
Comments: Clusters of white, pea-shaped flowers are followed by flat, beanlike pods in summer. Trees sucker and form colonies if the soil around mature trees are left undisturbed. The native trees have thorns but there are several thornless cultivars that are promoted in the trade as ornamental shade trees. Trees have broad umbrellalike canopies.